1.Moving the waterline away from the lens makes it possible to capture images both above and below the water simultaneously. 2.These are often referred to as half and half, 50/50, over under or split-level pictures. 3.Easy to operate, nearly infinite depth of field, wide-angle lens

1.Moving the waterline away from the lens makes it possible to capture images both above and below the water simultaneously. 2.These are often referred to as half and half, 50/50, over under or split-level pictures. 3.Easy to operate, nearly infinite depth of field, wide-angle lens and video and still image quality make the GoPro perfectly suited for this application. 4.The Dome Port utilizes a custom made semi-hemispherical acrylic dome that has been optically matched to work with the GoPro lens,package includes GoPro housing and a floating handheld, all you need is a camera,turn it on and produce stunning imagery. 5.The use of a semi-hemispherical dome eliminates the perpendicular angle between the backing plate and the dome.The benefits of this are the elimination of circular reflection and improved water sheeting while reducing the form factor and maintaining full front face surface area. 6.The Dome Port works with the Hero 3 or Hero 4 housing case and does not require any special modifications or separate accessories. 7.The GoPro is just as secure as always since the Dome Port slips right onto the housing, it does not alter the depth rating of the GoPro housing. Dimension:20 x 15 x 19cm/7.9 x 5.7 x 7.6 inches Materia:PC,ABS Shipping  weight(with packing): 800g Compatible with: For GoPro Hero 3   and Hero4 Package Included: 1 x Dome Port with waterproof housing case 1 x Floaty Bobber 1 x Screw